jdumont0201

class A{
   int  d_val;
 public:
   A(int val){
       d_val=val;
   }
};

int main(){
  A * a=new A(5);

jdumont0201

import cv2
import numpy as np
img = cv2.imread('images/input.jpg')
gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)

rows,cols = img.shape[:2]



cv2.imshow('Original',img)

jdumont0201

<build_depend>message_generation</build_depend> 
<run_depend>message_runtime</run_depend>

jdumont0201

find_package(catkin REQUIRED COMPONENTS
       roscpp
       std_msgs
       message_generation   # Add message_generation here, after the other packages
)

#Add to message files
add_message_files(
      FILES

jdumont0201

find_package(catkin REQUIRED COMPONENTS  roscpp roslib)

jdumont0201

#include <ros/package.h>
trajectory.request.file = ros::package::getPath("packagename") + "/path_to/file.txt";

jdumont0201

float64 radius 
int32 repetitions 
--- 
bool success

jdumont0201

 add_service_files(
   FILES
   ServiceName.srv
 )
...
find_package(catkin REQUIRED COMPONENTS
  roscpp
  message_generation
)

jdumont0201

 find_package(catkin REQUIRED COMPONENTS roscpp std_msgs message_generation )

...

add_service_files(
  FILES
  MyCustomServiceMessage.srv
)

...

jdumont0201

#include "ros/ros.h" #include "std_srvs/Empty.h" // Import the service message header file generated from the Empty.srv message

bool my_callback(std_srvs::Empty::Request  &req, std_srvs::Empty::Response &res){
//process some action
ROS_INFO("My_callback has been called");
  return true;
}

int main(int argc, char **argv){
  ros::init(argc, argv, "service_server");